Consent can be a tricky issue.
It varies somewhat by state. Acts between 2 people
could be legal in one, yet land one in prison in another.
Liberty vs severe penalty is based upon the random
chance of where one lives.
en.wikipedia.org
Excerpted...
Minors' inability to consent[edit]
Between adults, most sexual activity does not constitute a criminal offense, unless one of the adults does not
consent to the activity. In contrast, minors are unable to give consent under the law. Indeed, the term "minor" refers to a person who has not yet reached
majority, the age at which one may give consent in any legal matter (for example, a minor cannot make a valid contract).
[7] However, actual laws and the
maximum ages that constitute breach of law vary by state. A person engaging in sexual activity with a minor below these proscribed ages (16–18), regardless of that minor's seeming "consent" or compliance, commits an offense (terminology varies). In most states, much more severe offenses and/or sentences exist for cases with young children, approximately under 12–13.
Many states
[8] include in their
penal codes a "Romeo and Juliet" exception for cases where sexual activity occurs between a young adult and a minor whose ages are within a few years of each other.
[9] This exception typically bars charging the young adult with a sex offense, if the young adult did not use
force or
coercion on the minor and the minor is a
teenager.
[10]